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Acute ecotoxicity and genotoxicity assessment of two wastewater treatment units.
de Souza Celente, Gleison; Colares, Gustavo Stolzenberg; da Silva Araújo, Priscila; Machado, Ênio Leandro; Lobo, Eduardo Alexis.
Afiliación
  • de Souza Celente G; Environmental Technology, University of Santa Cruz do Sul (UNISC), Avenida Independência, 2293, Santa Cruz do Sul, Rio Grande do Sul, 96815-900, Brazil. gleison_celente@hotmail.com.
  • Colares GS; Environmental Technology, University of Santa Cruz do Sul (UNISC), Avenida Independência, 2293, Santa Cruz do Sul, Rio Grande do Sul, 96815-900, Brazil.
  • da Silva Araújo P; Biological Sciences, University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Brazil.
  • Machado ÊL; Environmental Technology Program (Master and Doctoral courses), University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Brazil.
  • Lobo EA; Environmental Technology Program (Master and Doctoral courses), University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Brazil.
Environ Sci Pollut Res Int ; 27(10): 10520-10527, 2020 Apr.
Article en En | MEDLINE | ID: mdl-31940141
Water contamination by discharge of untreated or poorly treated wastewater into water bodies is a current issue that may cause harm to humans. Water quality assessment targets general parameters, which often misleads to underestimation of their implication in the environment. Acute and genotoxicity assays using Daphnia magna is a reliable tool for testing deleterious effects of wastewater exposure. This paper aimed at evaluating acute ecotoxicity as well as genotoxicity of a biological treatment system composed by an anaerobic bioreactor (AR), algal turf scrubber (ATS), followed by two downflow constructed wetlands (CW). The university's wastewater treatment plant (WWTP) composed by an equalization tank (ET), an upflow anaerobic sludge blanket (UASB), followed by an aerobic bioreactor (AB) was also assessed for acute and genotoxicity. Our results showed the acute ecotoxicity ranged from moderately to extremely toxic, and from nontoxic to moderately toxic for ET and AB. For AR, most samples were moderately toxic. The outflow from ATS and CW's tanks completely eliminated acute toxicity and genotoxicity evidencing that the proposed system combining ATS and vertical CWs is suitable for treating sanitary wastewater.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Aguas Residuales Límite: Animals Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Aguas Residuales Límite: Animals Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania